rkayaith d75ac58117 [mlir] Add option to control python search priming
This adds an option to configure the CMake python search priming
behaviour that was introduced in D118148. In some environments the
priming would cause the "real" search to fail. The default behaviour is
unchanged, i.e. the search will be primed.

Reviewed By: stellaraccident

Differential Revision: https://reviews.llvm.org/D120765
2022-03-01 14:52:56 -08:00
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